3.9 Plus 15 Addition :

Number 1	Number 2	Answer
3.9	15	18.9

How to calculate 3.9 plus 15 ?

Let's break down the addition of 03.9 and 1500 step by step:

   03.9      <-- Start with the rightmost column
+  1500
---------

    Add the digits in the rightmost column:
        9 + 0 + 0 = 9
        Write down 9 in the rightmost column, carry over 0 to the next column.

   03.9
+  1500
---------
     9


    Add the digits in the rightmost column:
        3 + 5 + 0 = 8
        Write down 8 in the rightmost column, carry over 0 to the next column.

   03.9
+  1500
---------
     8.9


    Add the digits in the rightmost column:
        0 + 1 + 0 = 1
        Write down 1 in the rightmost column, carry over 0 to the next column.

   03.9
+  1500
---------
     18.9

    Continue to the left:
        There are no more columns to the left.

The final result is 18.9.

Similar Summation Operations :

Number 1	Number 2	ANSWER:	HOW TO ?
4	24	28	4 plus 24
4.1	26	30.1	4.1 plus 26
4.2	35	39.2	4.2 plus 35
2.9	6.3	9.2	2.9 plus 6.3
7.9	5.6	13.5	7.9 plus 5.6
6.3	8.7	15	6.3 plus 8.7